<ARTICLE> 5
<LEGEND>
This document contains summary financial information extracted from Item 1 of
Form 10-Q for the period ended June 30, 1998 and is qualified in its entirety by
referece to such 10-Q
</LEGEND>
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          32,944
<SECURITIES>                                    93,733
<RECEIVABLES>                                   11,270
<ALLOWANCES>                                       300
<INVENTORY>                                          0
<CURRENT-ASSETS>                               147,196
<PP&E>                                          73,028
<DEPRECIATION>                                  27,375
<TOTAL-ASSETS>                                 219,188
<CURRENT-LIABILITIES>                           60,404
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            27
<OTHER-SE>                                     157,849
<TOTAL-LIABILITY-AND-EQUITY>                   219,188
<SALES>                                              0
<TOTAL-REVENUES>                                63,472
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                45,990
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 10,201
<INCOME-TAX>                                     1,428
<INCOME-CONTINUING>                              8,773
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,773
<EPS-PRIMARY>                                     0.30
<EPS-DILUTED>                                     0.30